CN112318896A - Die and forming method for curved-surface metal honeycomb composite material - Google Patents

Die and forming method for curved-surface metal honeycomb composite material Download PDF

Info

Publication number
CN112318896A
CN112318896A CN202011225704.0A CN202011225704A CN112318896A CN 112318896 A CN112318896 A CN 112318896A CN 202011225704 A CN202011225704 A CN 202011225704A CN 112318896 A CN112318896 A CN 112318896A
Authority
CN
China
Prior art keywords
baffle
groove
composite material
cavity
female die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011225704.0A
Other languages
Chinese (zh)
Inventor
石小平
李书军
杨自燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Lianke Aviation Technology Co ltd
Original Assignee
Chengdu Lianke Aviation Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Lianke Aviation Technology Co ltd filed Critical Chengdu Lianke Aviation Technology Co ltd
Priority to CN202011225704.0A priority Critical patent/CN112318896A/en
Publication of CN112318896A publication Critical patent/CN112318896A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a mould and a forming method of a curved surface metal honeycomb composite material, wherein the mould comprises a female mould and a baffle plate, and the female mould is detachably connected with the baffle plate; the concave die is provided with a molding surface matched with the curved metal honeycomb composite material, and the baffle and the molding surface form a cavity; the baffle includes reference baffle and limit baffle, and reference baffle is provided with the first groove of dodging on sunken and dodging the groove under first respectively with the upper edge and the lower limb of cavity corresponding surface, and limit baffle dodges the groove under groove and the second on being provided with the second of dodging respectively with the upper edge and the lower limb of cavity corresponding surface. The mould of the invention ensures that the raw materials of each layer are tightly attached and well attached to the forming curved surface, ensures the uniform stress in the hot-press curing forming of the composite material, ensures the bonding quality of the composite material, accurately controls the size of the composite material, and improves the yield and the product quality of the composite material.

Description

Die and forming method for curved-surface metal honeycomb composite material
Technical Field
The invention relates to the technical field of composite material manufacturing, in particular to a mold and a molding method for a curved-surface metal honeycomb composite material.
Background
The honeycomb composite material is a composite material with a sandwich structure formed by bonding a honeycomb core material and a surface material, has good performance in use, has good strength and good impact resistance, and can be well designed in use, so the honeycomb composite material is widely applied, is particularly used as a main bearing structural member and a secondary bearing structural member in an aerospace aircraft structure, and particularly can be used as a component of a thrust reverser which is a power device part on an aircraft engine, and has great influence on the direct working cost and the working performance of the aircraft.
The performance of the honeycomb composite material is mainly determined by the material performance of the honeycomb core, and the height, the material, the density and the shape of the honeycomb core have great influence on the performance of the honeycomb composite material. Currently, honeycomb composites with aluminum honeycomb core material as the middle sandwich are the most widely used. The invention relates to a curved surface metal honeycomb composite material, as shown in a structure diagram of the composite material shown in figure 1, the composite material is formed by solidifying a lower skin 1, an aluminum honeycomb core 2, an upper skin 3 and an interlayer adhesive film through joint bonding, the composite material is curved, a mold with a forming surface matched with the composite material is adopted in the forming process, a baffle for positioning and limiting the raw material is arranged on the mold, a cavity is formed by the baffle and the forming surface, and the lower skin 1, the aluminum honeycomb core 2, the upper skin 3 and the adhesive film are placed in the cavity and then are subjected to hot pressing and solidification forming. For the arrangement of the size of the cavity, when the cavity is too large, raw materials can be well placed in the cavity, but the raw materials are easy to move under the action of pressure due to the large cavity, the positioning among the materials of all layers is inaccurate, and the product percent of pass is low; when the size of the cavity is just proper or slightly small, the raw materials have tolerance in the processing process, the raw materials cannot be placed in the cavity, gaps exist among the raw materials on different layers, even the situation that the upper skin is pressed on the stop block easily occurs, so that the raw materials are stressed unevenly in the hot-pressing curing forming process, the bonding force among all layers of the formed composite material is insufficient, the bonding quality is poor, the composite material is prone to layering in the subsequent use process, and the mechanical property and the service life of the composite material are seriously influenced. Therefore, it is necessary to redesign a mold for molding the metal honeycomb composite material.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a mould and a forming method of a curved-surface metal honeycomb composite material.
In order to achieve the above purpose, the invention provides the following technical scheme:
the die for the curved-surface metal honeycomb composite material comprises a female die and a baffle, wherein the female die is detachably connected with the baffle; the concave die is provided with a molding surface matched with the curved metal honeycomb composite material, and the baffle and the molding surface form a cavity;
the baffle includes reference baffle and limit baffle, reference baffle with the cavity corresponds the top edge and the lower limb of face and is provided with the first groove of dodging on sunken first and dodge the groove first down respectively, limit baffle with the cavity corresponds the top edge and the lower limb of face and is provided with the groove of dodging under groove and the second on the sunken second respectively, dodge on groove and the second on the first groove of dodging and match, dodge under groove and the second first groove of dodging and match.
The invention relates to a mould of a curved surface metal honeycomb composite material, which is matched with the shape and radian of the curved surface metal honeycomb composite material, wherein a female mould is used for forming the curved surface of the curved surface metal honeycomb composite material, a baffle is used for positioning and limiting a lower skin, an aluminum honeycomb core, an upper skin and the like of a composite material raw material, the baffle surrounds a forming surface to form a cavity, the cavity is used for placing the raw material of the composite material, avoidance grooves are respectively arranged on a reference baffle and the limiting baffle, the redundant parts of the upper skin and the lower skin of the raw material can be placed in the avoidance grooves, each layer of raw material can be easily assembled in the cavity for hot-pressing curing forming, each layer of raw material is tightly attached and well attached to the forming curved surface of the mould, no interference is generated between the raw material and the baffle, the uniform stress in the hot-pressing curing forming of the composite material, the size of the composite material is accurately controlled, and the yield and the product quality of the composite material are improved.
As a preferred scheme of the invention, the female die is provided with a positioning hole, the baffle plate is provided with a through hole matched with the positioning hole, and the female die and the baffle plate are connected through a screw to realize detachable connection.
As a preferable scheme of the present invention, the depth of the first upper avoidance groove is 1 to 10mm, the depth of the first lower avoidance groove is the depth of the first lower avoidance groove in the width direction of the reference baffle, and the depth of the first upper avoidance groove is the depth of the first upper avoidance groove in the width direction of the reference baffle.
As a preferable scheme of the present invention, the height a of the first upper avoidance groove and the thickness of the upper skin are a1，a1<a≤1.3a1The height of the first upper avoidance groove refers to the height of the first upper avoidance groove in the thickness direction of the reference baffle.
As a more preferable aspect of the present invention, the height b of the first avoidance groove and the thickness of the lower skin are b1，b1<b≤1.3b1The height of the lower avoidance groove is the height of the lower avoidance groove along the thickness direction of the reference baffle.
As a preferable scheme of the invention, at least one first limiting block is arranged on the reference baffle, at least one second limiting block is arranged on the limiting baffle, and the first limiting block and the second limiting block are used for limiting the upper skin and preventing the upper skin from moving in a direction perpendicular to the tangent plane of the molding surface.
As a preferable aspect of the present invention, the reference baffle includes a first baffle and a second baffle, and the first baffle is provided with a first upper avoidance groove and a first lower avoidance groove, which are recessed, at an upper edge and a lower edge of a surface corresponding to the cavity, respectively.
As a preferable scheme of the present invention, the limiting baffle includes a third baffle and a fourth baffle, and the third baffle is provided with a second upper avoidance groove and a second lower avoidance groove, which are recessed, at an upper edge and a lower edge of a surface corresponding to the cavity, respectively.
As a more preferable scheme of the present invention, the first baffle is formed by splicing at least two first strip-shaped blocks, the second baffle is formed by splicing at least two second strip-shaped blocks, the third baffle is formed by splicing at least two third strip-shaped blocks, and the fourth baffle is formed by splicing at least two fourth strip-shaped blocks; each of the first or each second or each third or each fourth bar may be the same or different from one another and may be different from one another. More preferably, each said first or each said second or each said third or each said fourth bar is different from one another. In the invention, the first baffle, the second baffle, the third baffle and the fourth baffle are spliced, and the baffle and the molding surface can be better connected in a matching way by the splicing mode; if the local damage or deformation in the baffle, also convenient maintenance or change.
As a more preferable scheme of the present invention, the first limiting block is disposed on a top surface of the first baffle, and the second limiting block is disposed on a top surface of the third baffle.
As a more preferable scheme of the present invention, one surface of each first limiting block, which is close to the cavity, is flush with the bottom surface of the first upper avoidance groove, one surface of each second limiting block, which is close to the cavity, is flush with the bottom surface of the second upper avoidance groove, the bottom surface of the first upper avoidance groove is a surface of the first upper avoidance groove along the thickness direction of the first baffle, and the bottom surface of the second upper avoidance groove is a surface of the second upper avoidance groove along the thickness direction of the third baffle.
The invention also provides a molding method of the curved-surface metal honeycomb composite material, and the mold comprises the following steps:
s1, connecting the reference baffle to the female die;
s2, laying a lower skin on the molding surface of the female die, and connecting the limit baffle to the female die; sequentially laying a glue film, an aluminum honeycomb core, a glue film and an upper skin on the lower skin from bottom to top;
s3, packaging a vacuum bag on the mould in S2 and vacuumizing; then sending the mixture into autoclave equipment for hot-pressing curing molding;
and S4, cooling to below 60 ℃, and demolding to obtain the curved metal honeycomb composite material.
As a preferred embodiment of the present invention, after the vacuum bag is vacuumized in S3, the vacuum degree in the vacuum bag is greater than-0.6 bar.
As a preferable scheme of the invention, after the pressure is sent to the autoclave device in S3, the die is pressurized to a pressure of more than 2.0 bar.
Compared with the prior art, the invention has the beneficial effects that:
1. the die is matched with the curved surface metal honeycomb composite material in shape and radian, the avoidance grooves are formed in the reference baffle and the limiting baffle, all layers of raw materials can be easily assembled in the cavity for hot-pressing curing molding, all the layers of raw materials are tightly attached and well attached to the molding surface of the die, interference between the raw materials and the baffles is avoided, the uniform stress in the hot-pressing curing molding of the composite material is ensured, the bonding quality of the composite material is ensured, the size of the composite material is accurately controlled, and the yield and the product quality of the composite material are improved.
2. According to the die, the first limiting block and the second limiting block are respectively arranged on the reference baffle and the limiting baffle, so that the upper skin can be prevented from moving in the direction vertical to the section of the molding surface.
3. The forming method of the invention adopts the die with simple structure and convenient use, and can be widely applied to honeycomb composite materials with different shapes or types.
Description of the drawings:
FIG. 1 is an exploded view of a curved metal honeycomb composite of the present invention;
FIG. 2 is a schematic three-dimensional structure of a mold in example 1 of the present invention;
FIG. 3 is a schematic three-dimensional structure of a female mold in example 1 of the present invention;
FIG. 4 is a schematic three-dimensional view of a first baffle plate according to embodiment 1 of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic side view of a first baffle plate in example 1 of the present invention;
FIG. 7 is a schematic three-dimensional view of a second baffle plate in example 1 of the present invention;
FIG. 8 is a schematic three-dimensional view of a third baffle plate in example 1 of the present invention;
FIG. 9 is an enlarged view of portion B of FIG. 8;
FIG. 10 is a schematic three-dimensional view of a fourth baffle plate in example 1 of the present invention;
FIG. 11 is a schematic view showing the placement of the raw materials in the mold in example 2 of the present invention;
the labels in the figure are: 1-lower skin, 2-aluminum honeycomb core, 3-upper skin, 4-female die, 41-positioning hole, 5-first baffle, 51-first lower avoidance groove, 52-first upper avoidance groove, 53-first limiting block, 6-second baffle, 7-third baffle, 71-second lower avoidance groove, 72-second upper avoidance groove, 73-second limiting block, and 8-fourth baffle.
Detailed Description
The present invention will be described in detail below as a preferred embodiment of the present invention with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-10, a mold for a curved-surface metal honeycomb composite material comprises a female mold 4 and a baffle, wherein the female mold 4 is detachably connected with the baffle; the female die 4 is provided with a molding surface matched with the curved surface metal honeycomb composite material, and the baffle and the molding surface form a cavity; the baffle includes reference baffle and limit baffle, reference baffle is provided with sunken first on dodging groove 52 and the first groove 51 of dodging down with the upper edge and the lower limb of cavity corresponding surface respectively, limit baffle is provided with the sunken second on dodging groove 72 and the second on dodging groove 71 with the upper edge and the lower limb of cavity corresponding surface respectively, dodge groove 72 phase-match on first on dodging groove 52 and the second, dodge groove 71 phase-match under groove 51 and the second first.
The molding surface is arranged in the middle of the concave surface of the female die 4, as shown in fig. 2-3, the molding surface is a hyperboloid, the female die is provided with a plurality of positioning holes 41, through holes matched with the positioning holes are arranged on the baffle, screws can penetrate through the through holes and are screwed in the positioning holes 41, and the female die 4 and the baffle can be detachably connected through the screws.
The reference baffle comprises a first baffle 5 and a second baffle 6, the first baffle 5 is formed by splicing two first strip-shaped blocks, the two first strip-shaped blocks are different, and as shown in fig. 4, the first baffle 5 is horizontally connected to the female die 4 along the left side of the forming surface of the female die 4. As shown in fig. 7, the second baffle 6 is formed by splicing three second strips, which are different from each other. The second baffle 6 is connected to the female die 4 along the direction of the upper cambered surface of the molding surface of the female die 4, and the first baffle 5 is provided with a first concave upper avoidance groove 52 and a first concave lower avoidance groove 51 at the upper edge and the lower edge of the surface corresponding to the cavity respectively; the top surface of the first baffle 5 is provided with a first limiting block 53, the first baffle 5 is provided with four first limiting blocks 53, and one surface of each first limiting block 53, which is close to the cavity, is flush with the bottom surface of the first upper avoidance groove 52, as shown in fig. 5-6.
The limit baffle comprises a third baffle 7 and a fourth baffle 8, the third baffle 7 is formed by splicing two third blocks, the two third blocks are different, and as shown in fig. 8, the third baffle 7 is horizontally connected to the female die 4 along the right side of the forming surface of the female die 4. As shown in fig. 10, the fourth baffle 8 is formed by splicing three fourth blocks, the three fourth blocks are different from each other, the fourth baffle 8 is connected to the female die 4 along the direction of the lower arc surface of the molding surface of the female die 4, and the third baffle 7 is provided with a second upper avoidance groove 72 and a second lower avoidance groove 71 which are recessed at the upper edge and the lower edge of the surface corresponding to the cavity, respectively, as shown in fig. 9. The top surface of the third baffle 7 is provided with a second limiting block 73, the third baffle 7 is provided with four second limiting blocks 73, and one surface of the second limiting block 73 close to the cavity is flush with the bottom surface of the second upper avoidance groove 72. The first stopper 53 and the second stopper 73 serve to restrain the upper skin 3 and prevent the upper skin 3 from moving in a direction perpendicular to the tangent plane of the molding surface.
Further, the height a of the first upper escape groove 52 and the thickness a of the upper skin 3 are1，a1<a≤1.3a1The height b of the first lower avoidance groove 51 and the thickness b of the lower skin 11，b1<b≤1.3b1(ii) a Specifically, in the present embodiment, the height of the first upper avoidance groove 52 and the height of the first lower avoidance groove 51 are both 1 mm.
Further, the depth of the first upper avoidance groove 52 is 1 to 10mm, and the depth of the first lower avoidance groove 51 is 1 to 10mm, specifically, in this embodiment, the depth of the first upper avoidance groove 52 is 4mm, and the depth of the first lower avoidance groove 51 is 3 mm. The first upper escape groove 52 and the second upper escape groove 72 have the same size, and the first lower escape groove 51 and the second lower escape groove 71 have the same size.
Example 2
The embodiment provides a method for molding a curved-surface metal honeycomb composite material, which adopts the mold of the embodiment 1 and comprises the following steps:
s1, connecting the reference baffle to the female die;
s2, laying a lower skin on the molding surface of the female die, and connecting the limit baffle to the female die; sequentially laying a glue film, an aluminum honeycomb core, a glue film and an upper skin on the lower skin from bottom to top;
s3, packaging a vacuum bag on the mould in S2 and vacuumizing; then sending the mixture into autoclave equipment for hot-pressing curing molding;
and S4, cooling to below 60 ℃, taking out of the tank, and demolding to obtain the curved metal honeycomb composite material.
Specifically, the upper skin 1 and the lower skin 2 in this embodiment both use sheet metal skins. In step S1, the first baffle 5 and the second baffle 6 are fixed to the female die 4 by screws in sequence as the reference edges of the raw material; in step S2, according to the positioning, the lower skin 3 is first laid on the molding surface of the female die 4, in the laying process, if there is a surplus portion on the left side of the lower skin 1, the surplus portion may extend into the first lower avoidance groove 51, then the third baffle 7 and the fourth baffle 8 are fixedly connected to the female die 4 by screws in sequence according to the positioning, if there is a surplus portion on the right side of the lower skin 1, the second lower avoidance groove 71 may extend into the surplus portion, the glue film, the aluminum honeycomb core 2, the glue film and the upper skin 3 are laid on the lower skin 1 in sequence from bottom to top, in laying the upper skin 3, if there is a surplus portion on the upper skin 3, the surplus portion may extend into the first upper avoidance groove 52 and the second upper avoidance groove 72, and the raw material is placed on the die as shown in fig. 11.
In step S3, a vacuum bag is packaged on a mold, the vacuum bag is fixed by a sealing tape, a vacuum system is manufactured, the vacuum bag is vacuumized to-0.35 to-0.33 bar, the airtightness of the vacuum bag is checked after the vacuum bag is vacuumized to ensure that the vacuum bag is tightly attached to the surface of the raw material, the mold is conveyed into an autoclave after the vacuum bag is qualified, the mold is inflated and pressurized at a pressure of 3.0 ± 0.2bar, hot-pressing curing molding is performed, the temperature of the autoclave is set to be 180 ± 5 ℃, the temperature rising speed is not more than 3 ℃/min, the curing time is 2.5 to 3 hours, and the vacuum bag needs to be vacuumized in the whole process. After hot-pressing solidification is finished, cooling in a hot-pressing tank, cooling at a speed of not more than 2 ℃/min by adopting water cooling, taking out the hot-pressing tank after the temperature is reduced to below 60 ℃, naturally cooling to normal temperature, and unloading vacuum; and taking out the die, detaching the fixed screws, and demolding the composite material and the die to obtain the curved-surface metal honeycomb composite material.
The shape and radian of the die and the curved surface metal honeycomb composite material are matched, the avoidance grooves are formed in the reference baffle and the limiting baffle, all layers of raw materials can be easily assembled in the cavity for hot-pressing curing molding, all layers of raw materials are tightly attached and well attached to the molding surface of the die, interference between the raw materials and the baffles cannot be generated, and the first limiting block and the second limiting block are respectively arranged on the reference baffle and the limiting baffle of the die, so that the upper skin can be prevented from moving in the direction vertical to the section of the molding surface. The mould ensures uniform stress in the hot-press curing molding of the composite material, ensures the bonding quality of the composite material, accurately controls the size of the composite material, and improves the yield and the product quality of the composite material.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The die for the curved-surface metal honeycomb composite material comprises a female die (4) and a baffle, wherein the female die (4) is detachably connected with the baffle, and is characterized in that a forming surface matched with the curved-surface metal honeycomb composite material is arranged on the female die (4), and a cavity is formed between the baffle and the forming surface;
the baffle includes reference baffle and limit baffle, reference baffle with the cavity corresponds the top edge and the lower limb of face and is provided with sunken first on dodging groove (52) and first groove (51) of dodging down respectively, limit baffle with the cavity corresponds the top edge and the lower limb of face and is provided with respectively on the sunken second and dodges groove (72) and second and dodge groove (71), dodge on groove (52) and the second on first and dodge groove and match (72), first dodge groove (51) and second under dodge groove (71) phase-match.
2. The die according to claim 1, characterized in that the female die (4) is provided with a positioning hole (41), the baffle is provided with a through hole matched with the positioning hole (41), and the female die (4) and the baffle are connected through a screw.
3. Mould according to claim 1, wherein the depth of the first upper avoidance groove (52) is 1-10mm and the depth of the first lower avoidance groove (51) is 1-10 mm.
4. Mould according to claim 3, characterized in that the first upper escape groove (52) has a height a and the upper skin (3) has a thickness a1，a1<a≤1.3a1(ii) a The height b of the first lower avoidance groove (51) and the thickness b of the lower skin (1)1，b1<b≤1.3b1。
5. The mold according to claim 1, characterized in that the reference baffle is provided with at least one first stopper (53) and at least one second stopper (73).
6. Mould according to claim 5, characterized in that said reference baffle comprises a first baffle (5) and a second baffle (6), said first baffle (5) being provided with a first upper and a first lower undercut groove (52, 51), respectively, at the upper and lower edges of the face corresponding to said cavity.
7. The mold according to claim 6, characterized in that said limit baffles comprise a third baffle (7) and a fourth baffle (8), said third baffle (7) being provided with a second upper and lower concave escape groove (72, 71) respectively at the upper and lower edges of the face corresponding to said cavity.
8. The mold according to claim 7, characterized in that the first stopper (53) is disposed on the top surface of the first baffle (5) and the second stopper (73) is disposed on the top surface of the third baffle (7).
9. The mold according to claim 8, characterized in that each of said first limit blocks (53) is flush with the bottom surface of said first upper escape groove (52) at a face thereof close to said cavity, and each of said second limit blocks (53) is flush with the bottom surface of said second upper escape groove (72) at a face thereof close to said cavity.
10. A method for forming a curved metal honeycomb composite material, characterized in that the mold according to any one of claims 1 to 9 is used, comprising the following steps:
s1, connecting the reference baffle to the female die (4);
s2, laying a lower skin (1) on the molding surface of the female die (4), and connecting the limit baffle to the female die (4); sequentially laying a glue film, an aluminum honeycomb core (2), a glue film and an upper skin (3) on the lower skin (1) from bottom to top;
s3, packaging a vacuum bag on the mould in S2 and vacuumizing; then sending the mixture into autoclave equipment for hot-pressing curing molding;
and S4, cooling to below 60 ℃, and demolding to obtain the curved metal honeycomb composite material.
CN202011225704.0A 2020-11-05 2020-11-05 Die and forming method for curved-surface metal honeycomb composite material Pending CN112318896A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011225704.0A CN112318896A (en) 2020-11-05 2020-11-05 Die and forming method for curved-surface metal honeycomb composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011225704.0A CN112318896A (en) 2020-11-05 2020-11-05 Die and forming method for curved-surface metal honeycomb composite material

Publications (1)

Publication Number Publication Date
CN112318896A true CN112318896A (en) 2021-02-05

Family

ID=74316276

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011225704.0A Pending CN112318896A (en) 2020-11-05 2020-11-05 Die and forming method for curved-surface metal honeycomb composite material

Country Status (1)

Country Link
CN (1) CN112318896A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113334798A (en) * 2021-04-29 2021-09-03 成都飞机工业（集团）有限责任公司 Tool for porous composite material workpiece and forming method thereof
CN114789926A (en) * 2022-04-18 2022-07-26 中航西安飞机工业集团股份有限公司 Adjustable tool for gluing and taping at overlap joint of aircraft skin and using method
CN115416392A (en) * 2022-09-22 2022-12-02 中国航空制造技术研究院 Glue joint deformation control method for composite material sandwich structure
CN117067637A (en) * 2023-09-13 2023-11-17 哈尔滨远驰航空装备有限公司 Resin-based composite honeycomb reinforcing structure and forming method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113334798A (en) * 2021-04-29 2021-09-03 成都飞机工业（集团）有限责任公司 Tool for porous composite material workpiece and forming method thereof
CN114789926A (en) * 2022-04-18 2022-07-26 中航西安飞机工业集团股份有限公司 Adjustable tool for gluing and taping at overlap joint of aircraft skin and using method
CN114789926B (en) * 2022-04-18 2023-09-05 中航西安飞机工业集团股份有限公司 Adjustable aircraft skin lap joint gluing and taping tool and use method
CN115416392A (en) * 2022-09-22 2022-12-02 中国航空制造技术研究院 Glue joint deformation control method for composite material sandwich structure
CN117067637A (en) * 2023-09-13 2023-11-17 哈尔滨远驰航空装备有限公司 Resin-based composite honeycomb reinforcing structure and forming method thereof
CN117067637B (en) * 2023-09-13 2023-12-19 哈尔滨远驰航空装备有限公司 Resin-based composite honeycomb reinforcing structure and forming method thereof

Similar Documents

Publication Publication Date Title
CN112318896A (en) Die and forming method for curved-surface metal honeycomb composite material
CN107253334B (en) Die and process for forming T-shaped stringer stiffened wallboard made of composite material
CN110481059B (en) Composite material foam sandwich structure and forming method thereof
CN112590247A (en) Method for integrally forming C-sandwich flat radome
CN108819287B (en) Forming device and forming method of reinforced wall plate assembly
CN101932432A (en) Method for producing fuselage cell sections for aircraft with composite fibre materials, and a device
EP4019220A1 (en) Mold, fabrication method for assembled preformed structure and fabrication method for wallboard structure
CN116394545B (en) Leading edge skin forming method and leading edge skin
CN108688195B (en) Trapezoidal skeleton structure of carbon fiber composite material and forming method thereof
CN113547763A (en) Forming device and forming method for double-sided T-shaped reinforced wall plate
CN116160701A (en) Forming method of large-curvature co-cured glass fiber reinforced plastic skin aramid fiber paper honeycomb sandwich structure
CN112092410B (en) Co-curing molding method for high-stability integrated support bearing high-precision camera
CN113681934A (en) Forming method of composite honeycomb sandwich part with U-shaped part at 90-degree edge
CN214239649U (en) Mould of curved surface metal honeycomb combined material
CN112477192A (en) Forming method of high-rigidity conical-structure carbon fiber composite material pipe
CN114379113B (en) I-beam forming die and forming process
CN115384127B (en) Honeycomb sandwich composite material part and preparation method thereof
CN213412998U (en) Closed type multi-unit pane composite material structure forming tool
CN114055807B (en) Method for forming composite material part, formed part and aircraft
CN210651973U (en) Tooling die for forming radome
CN114454515A (en) Forming method of composite beam body structure, beam body structure and forming tool
CN108973089B (en) Preparation method of composite material special-shaped skin structure
CN109203492A (en) A kind of large scale Material Stiffened Panel forming method
CN218985825U (en) High-strength carbon fiber composite material bottom plate and preparation mold thereof
CN109016559A (en) One kind being used for the molding method of the U-shaped beam of composite material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination